AER - TransGrid - Post-tax revenue model - 2021-22 return on debt update - January 2021

In line with our final decision on TransGrid's electricity transmission network, we have updated TransGrid's return on debt for 2021-22. As a result of this update, the return on debt for 2021-22 is 4.96 per cent. This results in an X-factor for 2021-22 of -1.32 per cent. Holding other things constant, a positive X-factor implies a real revenue decrease and a negative X-factor implies a real revenue increase. The revised PTRM shows the updated X-factor.